Yes the vineger is good at cleaning the calcium deposits that precipitate outthrough evaporation of the emitters. Every other month I flush my entire system by opening the ends of the main 1/2" drip lines and push the water through them to get any sediment out.
Vineger is mainly for emitter maintenance and a mild acidifier. (which if your drip pater is causing calcium deposits is a good idea anyway).
Studies have also shown adding mollasses through the irrigation can reduce harmful nematodes by increasing biological activity in the root zones. That and it's a great source of potasium and iron.
You will not regret putting in a system. Plus it gives you something to tinker with during the winter.
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